Gamemaker Data.win Decompiler Jun 2026

Copy data.win to a safe location. Decompilation tools can corrupt the file.

On Windows, the output is a standard .exe file. However, unlike a pure C++ compiled game, the GameMaker runner (the part that actually runs the game logic) is attached to the .exe , while all your game-specific assets and code are stored in a separate file: data.win . gamemaker data.win decompiler

Edit the code directly in UTMT (e.g., change _spd = 5 to _spd = 20 ). Save the data.win file. Copy data

They introduced the data.win format. This was a proprietary binary format designed to be unreadable by standard tools. While it wasn't true machine code (like C++), it was bytecode—a lower-level representation of GML that was much harder to translate back into readable human code. However, unlike a pure C++ compiled game, the

This led to the creation of (often referred to as UMT).

Crucially, until GMS 2.3, GameMaker did not encrypt or obfuscate this file by default. It relied on "security through obscurity."